2 init/start/stop/exit stream functions
3 Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com>
4 Copyright (C) 2004 Chris Kennedy <c@groovy.org>
5 Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl>
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * Author: Kevin Thayer <nufan_wfk at yahoo dot com>
25 * This file will hold API related functions, both internal (firmware api)
26 * and external (v4l2, etc)
29 * MPG600/MPG160 support by T.Adachi <tadachi@tadachi-net.com>
30 * and Takeru KOMORIYA<komoriya@paken.org>
32 * AVerMedia M179 GPIO info by Chris Pinkham <cpinkham@bc2va.org>
33 * using information provided by Jiun-Kuei Jung @ AVerMedia.
36 #include "ivtv-driver.h"
37 #include "ivtv-fileops.h"
38 #include "ivtv-queue.h"
39 #include "ivtv-mailbox.h"
40 #include "ivtv-ioctl.h"
43 #include "ivtv-cards.h"
44 #include "ivtv-streams.h"
46 static const struct file_operations ivtv_v4l2_enc_fops = {
48 .read = ivtv_v4l2_read,
49 .write = ivtv_v4l2_write,
50 .open = ivtv_v4l2_open,
51 .ioctl = ivtv_v4l2_ioctl,
52 .compat_ioctl = v4l_compat_ioctl32,
53 .release = ivtv_v4l2_close,
54 .poll = ivtv_v4l2_enc_poll,
57 static const struct file_operations ivtv_v4l2_dec_fops = {
59 .read = ivtv_v4l2_read,
60 .write = ivtv_v4l2_write,
61 .open = ivtv_v4l2_open,
62 .ioctl = ivtv_v4l2_ioctl,
63 .compat_ioctl = v4l_compat_ioctl32,
64 .release = ivtv_v4l2_close,
65 .poll = ivtv_v4l2_dec_poll,
68 #define IVTV_V4L2_DEC_MPG_OFFSET 16 /* offset from 0 to register decoder mpg v4l2 minors on */
69 #define IVTV_V4L2_ENC_PCM_OFFSET 24 /* offset from 0 to register pcm v4l2 minors on */
70 #define IVTV_V4L2_ENC_YUV_OFFSET 32 /* offset from 0 to register yuv v4l2 minors on */
71 #define IVTV_V4L2_DEC_YUV_OFFSET 48 /* offset from 0 to register decoder yuv v4l2 minors on */
72 #define IVTV_V4L2_DEC_VBI_OFFSET 8 /* offset from 0 to register decoder vbi input v4l2 minors on */
73 #define IVTV_V4L2_DEC_VOUT_OFFSET 16 /* offset from 0 to register vbi output v4l2 minors on */
80 enum v4l2_buf_type buf_type;
81 const struct file_operations *fops;
82 } ivtv_stream_info[] = {
83 { /* IVTV_ENC_STREAM_TYPE_MPG */
86 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VIDEO_CAPTURE,
89 { /* IVTV_ENC_STREAM_TYPE_YUV */
91 VFL_TYPE_GRABBER, IVTV_V4L2_ENC_YUV_OFFSET,
92 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VIDEO_CAPTURE,
95 { /* IVTV_ENC_STREAM_TYPE_VBI */
98 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VBI_CAPTURE,
101 { /* IVTV_ENC_STREAM_TYPE_PCM */
103 VFL_TYPE_GRABBER, IVTV_V4L2_ENC_PCM_OFFSET,
104 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_PRIVATE,
107 { /* IVTV_ENC_STREAM_TYPE_RAD */
110 PCI_DMA_NONE, 1, V4L2_BUF_TYPE_PRIVATE,
113 { /* IVTV_DEC_STREAM_TYPE_MPG */
115 VFL_TYPE_GRABBER, IVTV_V4L2_DEC_MPG_OFFSET,
116 PCI_DMA_TODEVICE, 0, V4L2_BUF_TYPE_VIDEO_OUTPUT,
119 { /* IVTV_DEC_STREAM_TYPE_VBI */
121 VFL_TYPE_VBI, IVTV_V4L2_DEC_VBI_OFFSET,
122 PCI_DMA_NONE, 1, V4L2_BUF_TYPE_VBI_CAPTURE,
125 { /* IVTV_DEC_STREAM_TYPE_VOUT */
127 VFL_TYPE_VBI, IVTV_V4L2_DEC_VOUT_OFFSET,
128 PCI_DMA_NONE, 1, V4L2_BUF_TYPE_VBI_OUTPUT,
131 { /* IVTV_DEC_STREAM_TYPE_YUV */
133 VFL_TYPE_GRABBER, IVTV_V4L2_DEC_YUV_OFFSET,
134 PCI_DMA_TODEVICE, 0, V4L2_BUF_TYPE_VIDEO_OUTPUT,
139 static void ivtv_stream_init(struct ivtv *itv, int type)
141 struct ivtv_stream *s = &itv->streams[type];
142 struct video_device *dev = s->v4l2dev;
144 /* we need to keep v4l2dev, so restore it afterwards */
145 memset(s, 0, sizeof(*s));
148 /* initialize ivtv_stream fields */
151 s->name = ivtv_stream_info[type].name;
153 if (ivtv_stream_info[type].pio)
154 s->dma = PCI_DMA_NONE;
156 s->dma = ivtv_stream_info[type].dma;
157 s->buf_size = itv->stream_buf_size[type];
159 s->buffers = (itv->options.kilobytes[type] * 1024 + s->buf_size - 1) / s->buf_size;
160 spin_lock_init(&s->qlock);
161 init_waitqueue_head(&s->waitq);
163 s->sg_handle = IVTV_DMA_UNMAPPED;
164 ivtv_queue_init(&s->q_free);
165 ivtv_queue_init(&s->q_full);
166 ivtv_queue_init(&s->q_dma);
167 ivtv_queue_init(&s->q_predma);
168 ivtv_queue_init(&s->q_io);
171 static int ivtv_prep_dev(struct ivtv *itv, int type)
173 struct ivtv_stream *s = &itv->streams[type];
174 int minor_offset = ivtv_stream_info[type].minor_offset;
177 /* These four fields are always initialized. If v4l2dev == NULL, then
178 this stream is not in use. In that case no other fields but these
183 s->name = ivtv_stream_info[type].name;
185 /* Check whether the radio is supported */
186 if (type == IVTV_ENC_STREAM_TYPE_RAD && !(itv->v4l2_cap & V4L2_CAP_RADIO))
188 if (type >= IVTV_DEC_STREAM_TYPE_MPG && !(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
191 /* card number + user defined offset + device offset */
192 minor = itv->num + ivtv_first_minor + minor_offset;
194 /* User explicitly selected 0 buffers for these streams, so don't
196 if (ivtv_stream_info[type].dma != PCI_DMA_NONE &&
197 itv->options.kilobytes[type] == 0) {
198 IVTV_INFO("Disabled %s device\n", ivtv_stream_info[type].name);
202 ivtv_stream_init(itv, type);
204 /* allocate and initialize the v4l2 video device structure */
205 s->v4l2dev = video_device_alloc();
206 if (s->v4l2dev == NULL) {
207 IVTV_ERR("Couldn't allocate v4l2 video_device for %s\n", s->name);
211 s->v4l2dev->type = VID_TYPE_CAPTURE | VID_TYPE_TUNER | VID_TYPE_TELETEXT |
212 VID_TYPE_CLIPPING | VID_TYPE_SCALES | VID_TYPE_MPEG_ENCODER;
213 if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
214 s->v4l2dev->type |= VID_TYPE_MPEG_DECODER;
216 snprintf(s->v4l2dev->name, sizeof(s->v4l2dev->name), "ivtv%d %s",
219 s->v4l2dev->minor = minor;
220 s->v4l2dev->dev = &itv->dev->dev;
221 s->v4l2dev->fops = ivtv_stream_info[type].fops;
222 s->v4l2dev->release = video_device_release;
227 /* Initialize v4l2 variables and prepare v4l2 devices */
228 int ivtv_streams_setup(struct ivtv *itv)
232 /* Setup V4L2 Devices */
233 for (type = 0; type < IVTV_MAX_STREAMS; type++) {
235 if (ivtv_prep_dev(itv, type))
238 if (itv->streams[type].v4l2dev == NULL)
241 /* Allocate Stream */
242 if (ivtv_stream_alloc(&itv->streams[type]))
245 if (type == IVTV_MAX_STREAMS)
248 /* One or more streams could not be initialized. Clean 'em all up. */
249 ivtv_streams_cleanup(itv, 0);
253 static int ivtv_reg_dev(struct ivtv *itv, int type)
255 struct ivtv_stream *s = &itv->streams[type];
256 int vfl_type = ivtv_stream_info[type].vfl_type;
259 if (s->v4l2dev == NULL)
262 minor = s->v4l2dev->minor;
263 /* Register device. First try the desired minor, then any free one. */
264 if (video_register_device(s->v4l2dev, vfl_type, minor) &&
265 video_register_device(s->v4l2dev, vfl_type, -1)) {
266 IVTV_ERR("Couldn't register v4l2 device for %s minor %d\n",
268 video_device_release(s->v4l2dev);
274 case VFL_TYPE_GRABBER:
275 IVTV_INFO("Registered device video%d for %s (%d kB)\n",
276 s->v4l2dev->minor, s->name, itv->options.kilobytes[type]);
279 IVTV_INFO("Registered device radio%d for %s\n",
280 s->v4l2dev->minor - MINOR_VFL_TYPE_RADIO_MIN, s->name);
283 if (itv->options.kilobytes[type])
284 IVTV_INFO("Registered device vbi%d for %s (%d kB)\n",
285 s->v4l2dev->minor - MINOR_VFL_TYPE_VBI_MIN,
286 s->name, itv->options.kilobytes[type]);
288 IVTV_INFO("Registered device vbi%d for %s\n",
289 s->v4l2dev->minor - MINOR_VFL_TYPE_VBI_MIN, s->name);
295 /* Register v4l2 devices */
296 int ivtv_streams_register(struct ivtv *itv)
301 /* Register V4L2 devices */
302 for (type = 0; type < IVTV_MAX_STREAMS; type++)
303 err |= ivtv_reg_dev(itv, type);
308 /* One or more streams could not be initialized. Clean 'em all up. */
309 ivtv_streams_cleanup(itv, 1);
313 /* Unregister v4l2 devices */
314 void ivtv_streams_cleanup(struct ivtv *itv, int unregister)
318 /* Teardown all streams */
319 for (type = 0; type < IVTV_MAX_STREAMS; type++) {
320 struct video_device *vdev = itv->streams[type].v4l2dev;
322 itv->streams[type].v4l2dev = NULL;
326 ivtv_stream_free(&itv->streams[type]);
327 /* Unregister or release device */
329 video_unregister_device(vdev);
331 video_device_release(vdev);
335 static void ivtv_vbi_setup(struct ivtv *itv)
337 int raw = itv->vbi.sliced_in->service_set == 0;
338 u32 data[CX2341X_MBOX_MAX_DATA];
343 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, 0xffff , 0, 0, 0, 0);
345 /* setup VBI registers */
346 itv->video_dec_func(itv, VIDIOC_S_FMT, &itv->vbi.in);
348 /* determine number of lines and total number of VBI bytes.
349 A raw line takes 1443 bytes: 2 * 720 + 4 byte frame header - 1
350 The '- 1' byte is probably an unused U or V byte. Or something...
351 A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal
352 header, 42 data bytes + checksum (to be confirmed) */
354 lines = itv->vbi.count * 2;
356 lines = itv->is_60hz ? 24 : 38;
357 if (itv->is_60hz && (itv->hw_flags & IVTV_HW_CX25840))
361 itv->vbi.enc_size = lines * (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
363 /* Note: sliced vs raw flag doesn't seem to have any effect
364 TODO: check mode (0x02) value with older ivtv versions. */
365 data[0] = raw | 0x02 | (0xbd << 8);
367 /* Every X number of frames a VBI interrupt arrives (frames as in 25 or 30 fps) */
369 /* The VBI frames are stored in a ringbuffer with this size (with a VBI frame as unit) */
370 data[2] = raw ? 4 : 8;
371 /* The start/stop codes determine which VBI lines end up in the raw VBI data area.
372 The codes are from table 24 in the saa7115 datasheet. Each raw/sliced/video line
373 is framed with codes FF0000XX where XX is the SAV/EAV (Start/End of Active Video)
374 code. These values for raw VBI are obtained from a driver disassembly. The sliced
375 start/stop codes was deduced from this, but they do not appear in the driver.
376 Other code pairs that I found are: 0x250E6249/0x13545454 and 0x25256262/0x38137F54.
377 However, I have no idea what these values are for. */
378 if (itv->hw_flags & IVTV_HW_CX25840) {
379 /* Setup VBI for the cx25840 digitizer */
381 data[3] = 0x20602060;
382 data[4] = 0x30703070;
384 data[3] = 0xB0F0B0F0;
385 data[4] = 0xA0E0A0E0;
387 /* Lines per frame */
390 data[6] = (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
392 /* Setup VBI for the saa7115 digitizer */
394 data[3] = 0x25256262;
395 data[4] = 0x387F7F7F;
397 data[3] = 0xABABECEC;
398 data[4] = 0xB6F1F1F1;
400 /* Lines per frame */
403 data[6] = itv->vbi.enc_size / lines;
407 "Setup VBI API header 0x%08x pkts %d buffs %d ln %d sz %d\n",
408 data[0], data[1], data[2], data[5], data[6]);
410 ivtv_api(itv, CX2341X_ENC_SET_VBI_CONFIG, 7, data);
412 /* returns the VBI encoder memory area. */
413 itv->vbi.enc_start = data[2];
414 itv->vbi.fpi = data[0];
418 IVTV_DEBUG_INFO("Setup VBI start 0x%08x frames %d fpi %d\n",
419 itv->vbi.enc_start, data[1], itv->vbi.fpi);
422 Note that the sliced argument seems to have no effect. */
423 for (i = 2; i <= 24; i++) {
427 valid = i >= 10 && i < 22;
429 valid = i >= 6 && i < 24;
431 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, i - 1,
433 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, (i - 1) | 0x80000000,
437 /* Remaining VBI questions:
438 - Is it possible to select particular VBI lines only for inclusion in the MPEG
439 stream? Currently you can only get the first X lines.
440 - Is mixed raw and sliced VBI possible?
441 - What's the meaning of the raw/sliced flag?
442 - What's the meaning of params 2, 3 & 4 of the Select VBI command? */
445 int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s)
447 u32 data[CX2341X_MBOX_MAX_DATA];
448 struct ivtv *itv = s->itv;
449 struct cx2341x_mpeg_params *p = &itv->params;
450 int captype = 0, subtype = 0;
451 int enable_passthrough = 0;
453 if (s->v4l2dev == NULL)
456 IVTV_DEBUG_INFO("Start encoder stream %s\n", s->name);
459 case IVTV_ENC_STREAM_TYPE_MPG:
463 /* Stop Passthrough */
464 if (itv->output_mode == OUT_PASSTHROUGH) {
465 ivtv_passthrough_mode(itv, 0);
466 enable_passthrough = 1;
468 itv->mpg_data_received = itv->vbi_data_inserted = 0;
469 itv->dualwatch_jiffies = jiffies;
470 itv->dualwatch_stereo_mode = p->audio_properties & 0x0300;
471 itv->search_pack_header = 0;
474 case IVTV_ENC_STREAM_TYPE_YUV:
475 if (itv->output_mode == OUT_PASSTHROUGH) {
477 subtype = 11; /* video+audio+decoder */
483 case IVTV_ENC_STREAM_TYPE_PCM:
487 case IVTV_ENC_STREAM_TYPE_VBI:
492 itv->vbi.inserted_frame = 0;
493 memset(itv->vbi.sliced_mpeg_size,
494 0, sizeof(itv->vbi.sliced_mpeg_size));
499 s->subtype = subtype;
500 s->buffers_stolen = 0;
502 /* Clear Streamoff flags in case left from last capture */
503 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
505 if (atomic_read(&itv->capturing) == 0) {
508 /* Always use frame based mode. Experiments have demonstrated that byte
509 stream based mode results in dropped frames and corruption. Not often,
510 but occasionally. Many thanks go to Leonard Orb who spent a lot of
511 effort and time trying to trace the cause of the drop outs. */
512 /* 1 frame per DMA */
513 /*ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 128, 0); */
514 ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 1, 1);
516 /* Stuff from Windows, we don't know what it is */
517 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 0);
518 /* According to the docs, this should be correct. However, this is
519 untested. I don't dare enable this without having tested it.
520 Only very few old cards actually have this hardware combination.
521 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1,
522 ((itv->hw_flags & IVTV_HW_SAA7114) && itv->is_60hz) ? 10001 : 0);
524 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 3, !itv->has_cx23415);
525 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 8, 0);
526 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 4, 1);
527 ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12);
529 /* assign placeholder */
530 ivtv_vapi(itv, CX2341X_ENC_SET_PLACEHOLDER, 12,
531 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
533 if (itv->card->hw_all & (IVTV_HW_SAA7115 | IVTV_HW_SAA717X))
535 else if (itv->card->hw_all & IVTV_HW_SAA7114)
540 ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, digitizer, digitizer);
543 if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) {
547 /* assign program index info. Mask 7: select I/P/B, Num_req: 400 max */
548 ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, 2, 7, 400);
549 itv->pgm_info_offset = data[0];
550 itv->pgm_info_num = data[1];
551 itv->pgm_info_write_idx = 0;
552 itv->pgm_info_read_idx = 0;
554 IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n",
555 itv->pgm_info_offset, itv->pgm_info_num);
557 /* Setup API for Stream */
558 cx2341x_update(itv, ivtv_api_func, NULL, p);
560 /* mute if capturing radio */
561 if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags))
562 ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1,
563 1 | (p->video_mute_yuv << 8));
567 if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
568 /* event notification (on) */
569 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1);
570 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
573 if (atomic_read(&itv->capturing) == 0) {
574 /* Clear all Pending Interrupts */
575 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
577 clear_bit(IVTV_F_I_EOS, &itv->i_flags);
579 /* Initialize Digitizer for Capture */
580 itv->video_dec_func(itv, VIDIOC_STREAMOFF, NULL);
581 ivtv_msleep_timeout(300, 1);
582 ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0);
583 itv->video_dec_func(itv, VIDIOC_STREAMON, NULL);
587 if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, captype, subtype))
589 IVTV_DEBUG_WARN( "Error starting capture!\n");
593 /* Start Passthrough */
594 if (enable_passthrough) {
595 ivtv_passthrough_mode(itv, 1);
598 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
599 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
601 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
603 /* you're live! sit back and await interrupts :) */
604 atomic_inc(&itv->capturing);
608 static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s)
610 u32 data[CX2341X_MBOX_MAX_DATA];
611 struct ivtv *itv = s->itv;
612 struct cx2341x_mpeg_params *p = &itv->params;
615 if (s->v4l2dev == NULL)
618 IVTV_DEBUG_INFO("Setting some initial decoder settings\n");
620 /* set audio mode to left/stereo for dual/stereo mode. */
621 ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
623 /* set number of internal decoder buffers */
624 ivtv_vapi(itv, CX2341X_DEC_SET_DISPLAY_BUFFERS, 1, 0);
627 ivtv_vapi(itv, CX2341X_DEC_SET_PREBUFFERING, 1, 1);
629 /* extract from user packets */
630 ivtv_vapi_result(itv, data, CX2341X_DEC_EXTRACT_VBI, 1, 1);
631 itv->vbi.dec_start = data[0];
633 IVTV_DEBUG_INFO("Decoder VBI RE-Insert start 0x%08x size 0x%08x\n",
634 itv->vbi.dec_start, data[1]);
636 /* set decoder source settings */
637 /* Data type: 0 = mpeg from host,
638 1 = yuv from encoder,
641 case IVTV_DEC_STREAM_TYPE_YUV:
642 datatype = itv->output_mode == OUT_PASSTHROUGH ? 1 : 2;
643 IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n", datatype);
645 case IVTV_DEC_STREAM_TYPE_MPG:
650 if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, datatype,
651 p->width, p->height, p->audio_properties)) {
652 IVTV_DEBUG_WARN("Couldn't initialize decoder source\n");
657 int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset)
659 struct ivtv *itv = s->itv;
661 if (s->v4l2dev == NULL)
664 if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags))
665 return 0; /* already started */
667 IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset);
669 ivtv_setup_v4l2_decode_stream(s);
671 /* set dma size to 65536 bytes */
672 ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, 1, 65536);
674 /* Clear Streamoff */
675 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
677 /* Zero out decoder counters */
678 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[0]);
679 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[1]);
680 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[2]);
681 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[3]);
682 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[0]);
683 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[1]);
684 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[2]);
685 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[3]);
687 /* turn on notification of dual/stereo mode change */
688 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
691 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, gop_offset, 0);
693 /* Clear the following Interrupt mask bits for decoding */
694 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
695 IVTV_DEBUG_IRQ("IRQ Mask is now: 0x%08x\n", itv->irqmask);
697 /* you're live! sit back and await interrupts :) */
698 atomic_inc(&itv->decoding);
702 void ivtv_stop_all_captures(struct ivtv *itv)
706 for (i = IVTV_MAX_STREAMS - 1; i >= 0; i--) {
707 struct ivtv_stream *s = &itv->streams[i];
709 if (s->v4l2dev == NULL)
711 if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) {
712 ivtv_stop_v4l2_encode_stream(s, 0);
717 int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end)
719 struct ivtv *itv = s->itv;
720 DECLARE_WAITQUEUE(wait, current);
724 if (s->v4l2dev == NULL)
727 /* This function assumes that you are allowed to stop the capture
728 and that we are actually capturing */
730 IVTV_DEBUG_INFO("Stop Capture\n");
732 if (s->type == IVTV_DEC_STREAM_TYPE_VOUT)
734 if (atomic_read(&itv->capturing) == 0)
738 case IVTV_ENC_STREAM_TYPE_YUV:
741 case IVTV_ENC_STREAM_TYPE_PCM:
744 case IVTV_ENC_STREAM_TYPE_VBI:
747 case IVTV_ENC_STREAM_TYPE_MPG:
753 /* Stop Capture Mode */
754 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
761 /* when: 0 = end of GOP 1 = NOW!, type: 0 = mpeg, subtype: 3 = video+audio */
762 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, stopmode, cap_type, s->subtype);
764 if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) {
765 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
766 /* only run these if we're shutting down the last cap */
767 unsigned long duration;
768 unsigned long then = jiffies;
770 add_wait_queue(&itv->eos_waitq, &wait);
772 set_current_state(TASK_INTERRUPTIBLE);
774 /* wait 2s for EOS interrupt */
775 while (!test_bit(IVTV_F_I_EOS, &itv->i_flags) &&
777 then + msecs_to_jiffies(2000))) {
778 schedule_timeout(msecs_to_jiffies(10));
781 /* To convert jiffies to ms, we must multiply by 1000
782 * and divide by HZ. To avoid runtime division, we
783 * convert this to multiplication by 1000/HZ.
784 * Since integer division truncates, we get the best
785 * accuracy if we do a rounding calculation of the constant.
786 * Think of the case where HZ is 1024.
788 duration = ((1000 + HZ / 2) / HZ) * (jiffies - then);
790 if (!test_bit(IVTV_F_I_EOS, &itv->i_flags)) {
791 IVTV_DEBUG_WARN("%s: EOS interrupt not received! stopping anyway.\n", s->name);
792 IVTV_DEBUG_WARN("%s: waited %lu ms.\n", s->name, duration);
794 IVTV_DEBUG_INFO("%s: EOS took %lu ms to occur.\n", s->name, duration);
796 set_current_state(TASK_RUNNING);
797 remove_wait_queue(&itv->eos_waitq, &wait);
798 set_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
801 /* Handle any pending interrupts */
802 ivtv_msleep_timeout(100, 1);
805 atomic_dec(&itv->capturing);
807 /* Clear capture and no-read bits */
808 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
810 if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
811 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
813 if (atomic_read(&itv->capturing) > 0) {
817 /* Set the following Interrupt mask bits for capture */
818 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
819 del_timer(&itv->dma_timer);
821 /* event notification (off) */
822 if (test_and_clear_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
823 /* type: 0 = refresh */
824 /* on/off: 0 = off, intr: 0x10000000, mbox_id: -1: none */
825 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_ENC_VIM_RST, -1);
826 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
834 int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts)
836 struct ivtv *itv = s->itv;
838 if (s->v4l2dev == NULL)
841 if (s->type != IVTV_DEC_STREAM_TYPE_YUV && s->type != IVTV_DEC_STREAM_TYPE_MPG)
844 if (!test_bit(IVTV_F_S_STREAMING, &s->s_flags))
847 IVTV_DEBUG_INFO("Stop Decode at %llu, flags: %x\n", (unsigned long long)pts, flags);
850 if (!(flags & VIDEO_CMD_STOP_IMMEDIATELY) || pts) {
853 /* Wait until the decoder is no longer running */
855 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3,
856 0, (u32)(pts & 0xffffffff), (u32)(pts >> 32));
859 u32 data[CX2341X_MBOX_MAX_DATA];
860 ivtv_vapi_result(itv, data, CX2341X_DEC_GET_XFER_INFO, 0);
861 if (s->q_full.buffers + s->q_dma.buffers == 0) {
866 if (ivtv_msleep_timeout(100, 1))
870 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, flags & VIDEO_CMD_STOP_TO_BLACK, 0, 0);
872 /* turn off notification of dual/stereo mode change */
873 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
875 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
876 del_timer(&itv->dma_timer);
878 clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags);
879 clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
880 ivtv_flush_queues(s);
882 /* decrement decoding */
883 atomic_dec(&itv->decoding);
885 set_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags);
886 wake_up(&itv->event_waitq);
888 /* wake up wait queues */
894 int ivtv_passthrough_mode(struct ivtv *itv, int enable)
896 struct ivtv_stream *yuv_stream = &itv->streams[IVTV_ENC_STREAM_TYPE_YUV];
897 struct ivtv_stream *dec_stream = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV];
899 if (yuv_stream->v4l2dev == NULL || dec_stream->v4l2dev == NULL)
902 IVTV_DEBUG_INFO("ivtv ioctl: Select passthrough mode\n");
904 /* Prevent others from starting/stopping streams while we
905 initiate/terminate passthrough mode */
907 if (itv->output_mode == OUT_PASSTHROUGH) {
910 if (ivtv_set_output_mode(itv, OUT_PASSTHROUGH) != OUT_PASSTHROUGH)
913 /* Fully initialize stream, and then unflag init */
914 set_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
915 set_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
917 /* Setup YUV Decoder */
918 ivtv_setup_v4l2_decode_stream(dec_stream);
921 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1);
922 atomic_inc(&itv->decoding);
924 /* Setup capture if not already done */
925 if (atomic_read(&itv->capturing) == 0) {
926 cx2341x_update(itv, ivtv_api_func, NULL, &itv->params);
929 /* Start Passthrough Mode */
930 ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, 2, 11);
931 atomic_inc(&itv->capturing);
935 if (itv->output_mode != OUT_PASSTHROUGH)
938 /* Stop Passthrough Mode */
939 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 11);
940 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 1, 0, 0);
942 atomic_dec(&itv->capturing);
943 atomic_dec(&itv->decoding);
944 clear_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
945 clear_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
946 itv->output_mode = OUT_NONE;